Rank pokemon games you have played by difficulty and state which champion or/and gym leader was hardest to beat.
As for me it goes:
>Difficulty (assuming full use of amie, super training and exp share)
FRLG<HGSS<XY<BW1<Platinum<BW2<Emerald<ORAS (still haven't finished)
>Champion
Iris
>Gym leader
Tate and Liza